Click Start, point to All Programs, point to Administrative Tools, and then click Active Directory Users and Computers.

Click View, and then click Advanced Features.

In the left pane, click the Users folder.

In the right pane, double-click one of the test users.

Click the Published Certificates tab.

In the List of X509 certificates published for the user account list, you should see the user's digital certificate from the Windows CA along with any other digital certificates stored for this user in Active Directory.